8x-12=21-3x

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Solution for 8x-12=21-3x equation:



8x-12=21-3x
We move all terms to the left:
8x-12-(21-3x)=0
We add all the numbers together, and all the variables
8x-(-3x+21)-12=0
We get rid of parentheses
8x+3x-21-12=0
We add all the numbers together, and all the variables
11x-33=0
We move all terms containing x to the left, all other terms to the right
11x=33
x=33/11
x=3

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